Fig. 1: Collection of C. heheva.

a Map showing the sampling site at the Haima cold seep of northern South China Sea (16° 73.228′ N, 110° 46.143′ E). b C. heheva at the sampling site (depth: 1385 m), where they cohabit with deep-sea mussels. C. heheva individuals are indicated by black arrows. Photo by Dr. Jian He.